Bump action versions

.github/workflows/deploy.yml

@@ -10,18 +10,15 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - name: Checkout repository
-      uses: actions/checkout@v2
-
-    - name: Set up Python
-      uses: actions/setup-python@v2
+    - uses: actions/checkout@v4
+    - uses: actions/setup-python@v5
       with:
         python-version: '3.12'
 
     - name: Generate index.json
       run: ./script/deploy
 
-    - name: Checkout deployment branch
+    - name: Commit to deployment branch
       run: |
         git fetch
         git checkout --orphan deployment